encumbrance /ɪnˈkʌmbrəns/

• 1. 

  N-COUNT An encumbrance is something or someone that encumbers you. 妨碍物; 累赘 [正式]

  例：

  Magdalena considered the past an irrelevant encumbrance.

  马格达莱娜觉得过去了的就是无用的累赘。